Email is not sending from “From” email address

I am re-posting this response because the original post I posted it on was already marked as “Resolved.”

The emails being sent from my site are not coming from the email indicated in the “From” email field. I have the latest installs of both WordPress and the Mail Bank plugin. I am using one gmail email to authenticate the SMTP credentials, but we need the emails to be sent “From” another email address associated with the domain of the site. Even when I choose “override” the emails are still coming from the gmail email address.